ASTROSAT CZTI

Data Quality Report

Orbit 25999

Creation date: 2024-06-27T19:23:41.735994
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_068T01_9000003760_25999cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25999cztM0_level2_quad_clean.evt
Size (bytes)481,176,00086,641,920
Size458.9 MB 82.6 MB
Events in quadrant A2,985,775571,128
Events in quadrant B3,135,234564,087
Events in quadrant C3,136,232535,316
Events in quadrant D4,900,908526,927

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126710
B0130970
C0131930
D0187750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6097781.279318%
B60981031.689078%
C60981151.885864%
D60983395.559200%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7027 6098 0 0 0.00% 0.00%
B 7028 6099 6 6 0.09% 0.10%
C 7028 6099 0 0 0.00% 0.00%
D 7028 6099 209 209 2.97% 3.43%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 9207 54.34 774 758 155.5
A 3 137 7031 40.35 774 758 155.5
A 0 226 6650 37.9 774 758 155.5
B 0 190 90930 617.13 758 739 146.1
B 10 245 78655 533.14 758 739 146.1
B 12 111 17483 114.57 758 739 146.1
C 0 239 158640 926.78 724 728 170.4
C 14 238 117598 685.9 724 728 170.4
C 3 233 25733 146.75 724 728 170.4
D 1 52 1933057 11020.46 729 712 175.3
D 7 80 86849 491.25 729 712 175.3
D 2 153 56405 317.63 729 712 175.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter